Major downsides for the Democrat and Republican party officials considering changing Iowa Caucus rules to Range or IRV voting

IRV suffers several downside risks that Range does not:

1. IRV increases the risk of tied-election nightmares like in Florida 2000 (whereas range decreases that risk);
2. IRV leads to great logistical problems and time-delays as in San Francisco; Range is simple and far superior for hand calculation statewide done in precincts;
3. IRV leads to less winner-quality on average than Range. Including in computer simulations specifically intended to resemble Iowa.) In contrast, Range voting exhibits no downside risks from the point of view of those decision makers. Why try to push a worse system on decision makers who'll want it less?

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